| Actor | Richard Jordan (as Joseph Armagh), Harvey Jason (as Harry Zieff), Robert Vaughn (as Charles Desmond), Perry King (as Rory Armagh), Charles Durning (as Ed Healey), David Huffman (as Sean Armagh), Terry Kiser (as Courtney Wickersham), Vic Morrow (as Tom Hennessey), Doug Heyes Jr. (as Kevin Armagh), Henry Fonda (as Sen. Enfield Bassett), Ray Bolger (as R.J. Squibbs), George Gaynes (as Orestes Bradley), Pernell Roberts (as Braithwaite), Patrick Labyorteaux (as Young Rory) |
| Actress | Patty Duke (as Bernadette Hennessey Armagh), Blair Brown (as Elizabeth Healey Hennessey), Katherine Crawford (as Mary Armagh), Jane Seymour (as Marjorie Chisholm), Cynthia Sikes (as Claudia), Barbara Parkins (as Martinique), Joanna Pettet (as Katherine Hennessey), Jenny Sullivan (as Honora Houlihan), Beverly D'Angelo (as Miss Emmy), Ann Dusenberry (as Anne-Marie), Ann Sothern (as Mrs. Finch), Missy Gold (as Young Mary) |
